Türkiye Jeoloji Bülteni

Stratigraphic Properties and Paleogeographic Evaluation of Pirnos Block Represents The South Margin of The Anamas - Akseki Autochthonous; Central Taurus, Turkey.

Abstract: The stratigraphic and paleogeographic properties of the Pirnos block which forms the southern part of Anamas - Akseki autochthonous (Central Taurus) is investigated. Pirnos block were represented by, fi`om bottom to top, Upper Anisian - Upper Nor ionsandstone and shale (Kasımlar fm.); Rhaetian dolomite (Menteşe dolomite) and limestone with Megalodon (Leylek limestone); Upper Rhaetian - Lower Liassic sandstone, conglomerate and mudstone (Üzümdere fm.); Middle - Upper Liassic limestone with Paleodasycladus (Alıçbeleni fm.) and dolomite (Hendos dolomite); Dogger - Malm oolitic limestone (Çamkuşağı fin); Malm calciturbidite(Karlığın fin.); Berriasian cherty limestone (Susuzkır fm.); Campanian - Maastrichtian calciturbidite and cherty limestone (Dumanlıfm.); and finally Danian olistostrome (Çamlıdere olistoslrome).Pirnos block was affected by a regression at the Upper Rhaetian, a transgression at the Lower Liassic, a regression at the beginning of Lower Dogger and to be followed by a transgression immediately. Block area which was subjected to uplift mg affected by arepeated transgresion at the begining of Campanian period and was finally covered by Antalya nappes tectonically at the end of Danian. At the and of Eocene, it was affected by compression.The repeated transgressive - regressive cycles clearly indicate that the southern edge of the Anamas - Akseki autochthonous wasnot tectonically stable during Mesozoic period.Lithological properties of Pirnos block show that southern part of the block was characterized by relatively deeper water environment in comparison with northern part during the Dogger - Malm period and during the Campanian - Maastrichtian. It is thought that this deeper part of the Anamas - Akseki autochthonous might have formed the northern edge of the Antalya basin (Pamphylien Basin).